Hitachi Virtual Storage Platform G400 - Glossary: Definitions I-K

HDU
har
d disk unit
head LDEV
See top LDEV.
host group
A group of hosts of the same operating system platform.
host mode
Operational modes that provide enhanced compatibility with supported host platforms. Used with
bre-channel ports on RAID storage systems.
host mode option
Additional options for bre-channel ports on RAID storage systems. Provide enhanced functionality
for host software and middleware.
HP XP7 CVAE
HP XP7 Command View Advanced Edition - a set of software applications included in the system
rmware. Via the GUI, they are used to congure, control, and monitor the storage system.
I
in-system replication
The original data volume and its copy are located in the same storage system. ShadowImage in-
system replication provides duplication of logical volumes; Thin Image in-system replication provides
"snapshots" of logical volumes that are stored and managed as virtual volumes (V-VOLs).
See also remote replication.
initiator
An attribute of the port that is connected to the port with RCU target attribute.
internal volume
A logical volume whose data resides on drives that are physically located within the storage system.
See also external volume.
J
JNL
journal
journal volume
A volume that records and stores a log of all events that take place in another volume. In the event
of a system crash, the journal volume logs are used to restore lost data and maintain data integrity.
In Universal Replicator, dierential data is held in journal volumes on until it is copied to the S-VOL.
JRE
Java Runtime Environment
K
key management server
A server that manages encryption keys. Encryption keys can be backed up to, and restored from, a
key management server that complies with the Key Management Interoperability Protocol (KMIP).
Glossary
System Administrator Guide for VSP Gx00 models and VSP Fx00 models 353